巻号一覧
57 巻, 1 号
選択された号の論文の25件中1～25を表示しています
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前沢 秀忠1991 年 57 巻 1 号 p. 7-10
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (675K) -
高木 俊宜1991 年 57 巻 1 号 p. 17-22
発行日: 1991/01/05
公開日: 2010/01/27
ジャーナル フリーPDF形式でダウンロード (902K) -
林 輝1991 年 57 巻 1 号 p. 23-27
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (3941K) -
田中 昭二1991 年 57 巻 1 号 p. 28-31
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (870K) -
廣田 薫1991 年 57 巻 1 号 p. 32-35
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (555K) -
森 勇蔵, 山内 和人, 遠藤 勝義1991 年 57 巻 1 号 p. 36-42
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (1127K) -
河合 正治, 加藤 玲子, 新海 雅彦, 高田 修, 為近 恵美, 依田 光正, 内山 隆, 奥野 昭宏, 喜多村 直, 佐藤 一雄, 河西 ...1991 年 57 巻 1 号 p. 58-69
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (13489K) -
大谷 和男, 奥山 博信, 森 勇蔵, 松岡 克典, 山崎 恭弘1991 年 57 巻 1 号 p. 85-90
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーTo fabricate the aspherical lens precisely, a machining apparatus with ultra-high precision has been developed by using NC EEM(numerically controlled elastic emission machining). The developed machining apparatus has following characteristics : (1) The measuring instrument is attached to the machining apparatus in order to be able to measure the aspherical shape of the lens without taking off the lens. (2) The rotating axis coupled to the center of lens holder is adopted in the developed machining apparatus, so as to be suitable for the fabrication of the axial symmetric aspherical lens. This paper describes construction, operation, characteristics of the developed machining apparatus. And some fabrication examples are also presented. The fabrication accuracy of the developed machining apparatus was ± 0.05 μ m.抄録全体を表示PDF形式でダウンロード (3196K) -
畑村 洋太郎, 長尾 高明, 中川 五郎, 井上 洋一, 杉下 寛1991 年 57 巻 1 号 p. 91-97
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーFail Safe System is indispensable to 24 hours unmanned manufacturing system and to CIM system. When the excess force acts, this system moves a tool or a workpiece backward, and stops the whole machine simultaneously. The authors realized this system on the machining center with a vertical spindle. This system prevents the machine from suffering the fatal damage because of misprogramming, unexpected tool breakage and other external disturbances which occur very often in the usual operation, and realizes very safe and very reliable manufacturing system.抄録全体を表示PDF形式でダウンロード (927K) -
機能検証のための一方法岸 義樹, 福井 幸男, 山下 樹里1991 年 57 巻 1 号 p. 98-103
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーIn this paper, as an element of thinking model in conceptual design, function verification with a knowledge base and a solid modeler by Prolog is discussed. In the top-down design process such as conceptual design, designers focus their activities on function generation and verification using their knowledge and experience. Therefore forms resulted from the activities are the skeleton of structural intension. The forms are, however, inconvenient for reasonable estimation of functional reality. To aid thinking in this process, handling forms logically consistent with generated functions is necessary. A method for this is to assign functions to a default form which has predefined feature attributes. Its functional attributes are defined, within its adaptability range, according to the generated functions. By this method solids given some functions at feature levels in B-reps representation show validity for function verification in design experiments of laser scanning combination.抄録全体を表示PDF形式でダウンロード (911K) -
システムの実現伊藤 公俊, 曽布川 拓司1991 年 57 巻 1 号 p. 104-109
発行日: 1991/01/05
公開日: 2010/01/27
ジャーナル フリーThis paper describes a detailed implementation of the automatic assembly plan generation system of which formalization as disassembling sequence generation has been given in the previous report. The disassembling procedure is composed of two phases which are called a dismounting phase and a transferring phase of a part or a set of parts. In a dismounting phase Part_Interfaces are cut moving each part to the position at which the part is separated from its “parent” part in the Plan Tree which is heuristic partial order introduced in the previous report. In a transferring phase each part is transferred to the outside of the assembly. Both of these phases are composed of moving direction selections and moving distance selections. Candidates of directions and distances are selected among Conceptual Vectors which are the local coordinates of the authors' design object modeller CONMOTO. The total disassembling problem solver has a hierarchical structure and is implemented in NODE language which has been developed by the authors and is much suited to retrieve actions in hierarchical backtracking. Some examples are shown finally.抄録全体を表示PDF形式でダウンロード (781K) -
正木 宏, 小島 俊雄1991 年 57 巻 1 号 p. 110-115
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThis paper deals with a solid model from which form features can be extracted easily in a general framework. The introduction of form feature concept to the solid modeling system has been proposed and proved to be effective in the manufacturing processes such as process planning. However, there are several points left to be improved. This comes from the fact that properties of a form feature are mainly dependent of its input and that they do not have sufficient information to represent another aspect of the objects explicitly. The approach of feature extraction from a solid model is considered as a candidate to overcome the problems. Some studies regarding to the form feature extraction has been examined but they are not fully successful. This paper treats the form feature as a set of faces with partially common properties. In the proposed model, properties of geometric elements with the same attribute values, such as planes of two parallel faces of a solid, are expressed directly and explicitly, which can be utilized effectively in the extraction. The modeling method is based on the object oriented concept with the extensions of inheritance of instance objects and unification of instance objects.抄録全体を表示PDF形式でダウンロード (806K) -
本間 義彦1991 年 57 巻 1 号 p. 116-119
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThis paper presents a method to analyze the operational ratio of the general structure of assembly lines which assembly stations are arranged in various ways for series, branches and parallels. Generaly, the operational ratio in an assembly line is affected by troubles in the assembly station itself and by the interruption of near-by stations. An analytical method for analizing the operational ratio of a line where assembly stations are aligned in series, branched and parrallel has been presented by previous papers with considerings for troubles of stations and the interrruption of near-by stations. The method for compound lines is based upon each method for the composition. Namely, a compound line is divided into a suitable part of series, branches or parallels. In the each part, the stoppage ratio is analized by the previous method and the each part is regarded as an imaginary station with the given stoppage ratio. Finally, the compound line is recomposed by imaginary stations in series and the operational ratio is calculated by the method for series. The feasibility of this method will be clarified by comparing analyzed and simulated results for some examples.抄録全体を表示PDF形式でダウンロード (499K) -
青柳 誠司, 神谷 好承, 岡部 佐規一1991 年 57 巻 1 号 p. 120-125
発行日: 1991/01/05
公開日: 2010/01/27
ジャーナル フリーIn order to increase the rotational speed of an ultrasonic motor using a flexural traveling wave, slits made on the surface of the stator are very effective. In this paper the projections made by the slits are called “sub-reeds” for convenience. Though the sub-reeds play important roles in an ultrasonic motor, their dimensions are generally decided through trial and error. This paper presents the optimum design method of a sub-reed by using elastic vibration analysis. This method calculates the dimensions of the sub-reed of which resonant frequency is same as that of the basic disc. This paper also presents that the resonance of the sub-reed mainly causes the magnification of the amplitude by using finite element analysis. The optimum design method and the mechanism of the magnification mentioned above are confirmed by experiments.抄録全体を表示PDF形式でダウンロード (647K) -
洪 舜教, 中野 嘉邦, 加藤 秀雄1991 年 57 巻 1 号 p. 126-131
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーWhen there are many vibration sources during cylindrical grinding, it is difficult to recognize which sources are responsible for undulations of ground surfaces. In this paper, firstly, the vibration sources have been precisely identified by comparing various vibration spectra and roundness profiles obtained by cut-and-try technique, and also by carrying out experimental modal analysis. Secondly, the vibrations have been suppressed by adopting in-situ balancing of not only a grinding wheel but also some electric motors, and further by attaching some dynamic dampers to the grinding machine. Finally, the effectiveness of the countermeasures upon grinding accuracy has been verified through grinding tests.抄録全体を表示PDF形式でダウンロード (777K) -
八重島 公郎, 矢野 昭洋1991 年 57 巻 1 号 p. 132-137
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThe purpose of this study is to expand the range of designing applicability and to improve the engagement performance by introducing a tangential shift (transverse shift) in addition to an already adopted radial shift (longitudinal shift) in designing of internal gears. Firstly an equation of engagement was formulated. Secondly a large number of limit diagrams for various interferences were prepared. On the basis of these data, an optimal designing system was developed. Finally extensive designing computation was carried out. Trial manufacture of gears was attempted by application of some of the computation data. It was confirmed that with the system and technique developed, designing of gears with a contact ratio above 2 and designing of internal gears having a small number of teeth became possible and that the introduction of a coefficient of transverse shift was considerably effective in expansion of the range of designing feasibility and improvement of the engagement performance. The practicability of the gears was verified by trial manufacture.抄録全体を表示PDF形式でダウンロード (830K) -
増井 清徳, 曽根 匠, 出水 敬1991 年 57 巻 1 号 p. 138-143
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThermal erosion process in wire-EDM influences metallurgical integrity on its machined surface, especially the change of microhardness may cause abnormal wear and/or microchipping of the EDM'd tools. This paper describes the behaviour of the microhardness in machining steels. The results obtained are summarized as follows : (1) Machining under de-ionized water makes surfaces hardened to an annealed steel, but re-softened to a quenched & tempered steel by a formation of the austenite. (2) Machining under the oil, both an annealed and a quenched & tempered steels are re-hardened by a increased carbon content from the dielectric fluid. (3) The discharge energy influences the hardness variations, the microhardness neighbouring to the machined surface are effected by each dielectric fluid, but not by the heat treatment conditions of the workpieces.抄録全体を表示PDF形式でダウンロード (1017K) -
加工条件と応力分布緒方 勲, 向山 芳世, 日原 政彦1991 年 57 巻 1 号 p. 144-149
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThe tensile residual stress that generates on surface of workpiece due to wire-EDM, causes stress corrosion cracking or season cracking, and often bring about deteriorations of some mechanical properties such as fatigue limit and impact strength. In this paper, residual stress on wire-EDM'd surface were observed concerning tempered or quenched cold work die steel, using X-ray stress measurement. The results are as follows. The value and depth of residual stress on wire-EDM'd surface depend largely on the mechanical properties of workpiece, especially the yield point. The residual stress distribution is mainly affected by electric machining conditions such as condenser capacity, charging current and other conditions such as wire tension, specific resistance of dielectric fluid, table feed rate.抄録全体を表示PDF形式でダウンロード (821K) -
CVD処理熱間金型鋼の熱疲労特性日原 政彦, 藤原 和徳, 向山 芳世, 緒方 勲1991 年 57 巻 1 号 p. 150-154
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThe thermal fatigue characteristics of hot die steel samples coated by the film of TiN, TiC, TiCN, TiC-TiN, TiC-TiCN-TiN, W2C or TD(VC) process have been studied by means of thermal fatigue test, erosion test, X-ray probe microanalysis and scannning electron microscopy. The samples were prepared using the CVD or TD(VC) processes. In the erosion test using a molten bath of aluminium, the TiC and TiC-TiN coated samples showed more effective erosion resistance than the other coated samples. The number of total cracks per area for the TiN and TiC-TiCN-TiN coated samples was smaller than the other coated samples during the thermal fatigue test. The growth of TiN was found in the matrix of the TiN coated sample after the thermal fatigue test.抄録全体を表示PDF形式でダウンロード (892K) -
小石川 勝男, 菊池 誠, 鴨志田 武, 江田 弘1991 年 57 巻 1 号 p. 155-160
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThis study was conducted on the structure of the heat affected layer formed by YAG laser. The mechanism for the formation of this layer with a thin plate of austenite structure stainless steel has not yet been adequately clarified. The conclusions obtained under the conditions used are summarized as follows : (1) The growth structure of a micro columnar crystal can be explained on the basis of a formation model of the heat affected layer visually conceived of from the experimental results. (2) A micro columnar crystal is formed independently of the variation for a laser pulse length. (3) This crystal is formed by quick cooling solidification. (4) The heat affected layer and micro columnar crystal on the surface skin layer clearly demonstrate the relationship of temperature to stress, arising from heat conduction.抄録全体を表示PDF形式でダウンロード (3128K) -
2自由度工具系再生びびりにおける安定限界の改善呉 進, 帯川 利之, 臼井 英治1991 年 57 巻 1 号 p. 161-165
発行日: 1991/01/05
公開日: 2010/01/27
ジャーナル フリーThe paper presents a stability analysis for regenerative chatter of an orthogonal vibration system with two degrees of freedom which is placed around the cutting edge in orthogonal cutting with tools of restricted tool-chip contact length. In order to realize this system, a specially designed single point tool, of which rectangular shank can be rotated for both the tool post and the cutting edge of zero approach angle, was used in two dimensional turning of a pipe end. A numerical analysis of the chatter growth with the method proposed in the previous paper was carried out for obtaining the stability thresholds. The stability charts thus obtained were compared and proved to be in good agreement with those obtained with the experiments. It is found that the reduction of tool-chip contact length always improves the stability threshold regardless of the mode directions of the chatter vibration, and the smaller the contact length, the greater the impovement is realized.抄録全体を表示PDF形式でダウンロード (625K) -
刈込 勝比古, 中川 威雄1991 年 57 巻 1 号 p. 166-171
発行日: 1991/01/05
公開日: 2010/01/27
ジャーナル フリーThe cast iron bonded diamond wheel can be applied to heavy duty grinding of ceramics. When the protrusion amount of abrasives from bonding surface is not enough, the sparking phenomena occurs by the direct contact between bond materials and ceramics in heavy duty grinding. As this sparking leads to dressing effect, it is named “spark dressing.” Sparking is confirmed indirectly to be occurred by the temperature rise of ground chip of ceramics under the insufficient supply of coolant. This can be eliminated by making the bonding material brittle or removing the material continuously.抄録全体を表示PDF形式でダウンロード (3759K) -
新井 実, 中山 一雄, 王 暁渡1991 年 57 巻 1 号 p. 172-177
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーIn recent years, FRM reinforced by SiC whisker or other fibre have been increasingly used for precision parts demanding high strength in aircraft and automobile industries. In order to meet the requirements on reliability and corrosion-resistance of the parts, it is necessary to get fine surface in cutting process. In this study, the mechanism of generation of finished surface in cutting FRM reinforced by short fibre was investigated, and the factors which influence the surface integrity were also discussed. As the result, it was made clear that the surface finish in cutting FRM reinforced by short fibre is mainly determined by the behaviour of fibre and can be classified into three patterns. That is, (1) the surface with exposed fracture surface of fibres cut by cutting edge ; (2) the surface having a lot of fine holes from which fibres were pulled up ; (3) smooth surface with an outer layer in which fibres were pushed down by cutting edge and were arranged in cutting direction. Moreover, these patterns are mainly dominated by kind of fibre, the behaviour of friction between FRM and cutting tool and the sharpness of cutting edge.抄録全体を表示PDF形式でダウンロード (1336K) -
木山 精一, 広野 豊, 細川 弘, 中野 昭一, 大隅 正人1991 年 57 巻 1 号 p. 178-183
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーLaser machining of multi-layer thin film is promissing to become an important processing in fabrications of electronic circuits. The various factors having influence on the characteristics of multi-layer thin film machining with a laser are evaluated theoretically and experimentally. The three dimensional heat diffusion equations including laser light absorption in multi-layer thin film structure are solved numerically to give the time evolution of temperature. Experiments were performed on amorphous Si (a-Si) multi-layer thin film structure of various thickness on transparent conductive oxide(TCO)/glass substrate to verify numerical results. The samples were irradiated with a Q-switched Nd : YAG laser at λ= 1. 06 μm and at λ =0.53, μm. The experimental results on the dependence of laser wavelength, laser pulse duration and laser irradiated energy on machining characteristics are in good agreement with the calculated results.抄録全体を表示PDF形式でダウンロード (1001K) -
最適研磨条件の選定楊 政峰, 吉川 昌範1991 年 57 巻 1 号 p. 184-189
発行日: 1991/01/05
公開日: 2009/10/08
ジャーナル フリーThe optimum condition of diamond film polishing using hot metallic plates is determined experimentally. Although diamond films deposited by microwave plasma CVD are not firmly connected to the surface of substrates, under low applied pressures and slow spinning speeds, diamond film can be polished smooth without peeling off the substrate by using hot metals. In this study, the effects of polishing conditions on polishing rate are examined by changing the polishing plate materials, temperatures, atmospheric gases, applied pressures and spinning speeds. As an optimum polishing condition, a 7×7 mm diamond film with a surface of 2.5μm Rmax is polished at 950°C in vacuum for 15 minutes, then polished at 750°C in a hydrogen atmosphere for 20 minutes, using an iron polishing plate under an applied pressure 40 kPa and a spinning speed 7 mm/s. A smoothly polished surface of 2.5 nm Ra is obtained. The polishing rates at 950°C in vacuum and at 750°C in hydrogen are about 7 μm/h and 0.5μm/h respectively.抄録全体を表示PDF形式でダウンロード (926K)
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